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Quarter-sized ding in headtube... a concern?(4 posts)

Quarter-sized ding in headtube... a concern?bigdave
Nov 12, 2002 5:41 PM
Howdy folks,

I've got this beater fixie that I use for a commuter. I got the frame for nothing and I knew this headtube ding existed before.

But it still has me wondering... is a ding in the head tube (about the size of a quarter, 1-inch up from the lower headset cup) something to be concerned about?

I don't want the thing to fold up on me some day... so if it's a problem, I ought to find a new "beater" frame (maybe that Surly Crosscheck? that's not too pricey).

TIA!

--Dave
Anyone?bigdave
Nov 13, 2002 8:04 AM
Any frame-builder types out there that can shed any light??

Thanks.
wotz da frame material???Akirasho
Nov 13, 2002 12:42 PM
... in general, unless there were other obvious deformations, this wouldn't produce a problem for steel or titanium frames... aluminium however, might warrant further inspection.

Contrary to some popular beliefs, aluminium is not a fragile material and can take a few dings before failing... yet it does have a limited fatigue life, so you'd have to take more care. If the frame is aluminium, don't attempt to repair or repaint the area... if it's bare, cover with a clear finish (nail polish) and watch the area for stress micro fractures (at least the ones you could see). While aluminium can fail catastrophically, it rarely does on a bike frame (I know, now I'll here stories of catastrophic failures) and the head tube in general does not see the same forces as other tubes... plus it's short.

Good luck!

We abide.

Remain In Light.

Be the bike.
Dat would be steel...bigdave
Nov 13, 2002 1:06 PM
It's some sort of steel... don't know what flavor.

It's also been powdercoated, so the area around the dent is not cracking or anything.

So forces are generally low there? If so, then I won't sweat it.

Thanks.

--Dave